#7 In the animal world, canines are used to grab the pray, not eating it in general. Humans use hands to grab it's pray, canines are not needed anymore. Some animals has large canines for defense and to scare off enemies, despite living on a non meat diet. For example Pandas, Aardwolfs and chimpanzees has canines for defense, not for hunting. So, using canines in the vegetarian debate is pointless. Both the lifestyle and intestines of humans are a proof that humans are omnivores, although our body is better at utilizing animal protein than plant protein.